Coaxiality and verticality detection tool

Abstract

The utility model relates to the technical field of detection tools, in particular to a coaxiality and verticality detection tool, which is suitable for detecting the connection precision of a first rotating shaft and a second rotating shaft, and comprises a fixed seat and a lever indicator, and the fixed seat is detachably connected to the first rotating shaft; the lever indicator is supported on the fixed seat; the lever indicator comprises a detection body and a detection end which is connected to the detection body in a swinging manner; the coaxiality and verticality detection tool has the beneficial effects that the coaxiality and verticality detection tool integrates two functions of coaxiality detection and verticality detection, the convenience of coaxiality and verticality detection is greatly improved, and the tool cost is reduced. Moreover, when the detection states of the two tools are switched, only the tools need to be adjusted, and compared with the prior art that the tools are completely replaced with new tools, the coaxiality and verticality detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, in particular to a coaxiality and perpendicularity detection tool. Background Art

[0002] In a numerically controlled machine tool with a lead screw drive, during the assembly process, the lead screw and the lead screw motor are driven through a coupling. Their coaxiality accuracy and the perpendicularity (hereinafter referred to as coaxiality and perpendicularity) accuracy between the end face of the motor shaft and the axis of the lead screw affect the accuracy of the machine tool. If the error is too large, it will cause a large repeated error of the machine tool, the detection curve will show periodic jitter, the motor will make regular noises, and over time, it will cause accidental damage to the lead screw bearing or the motor.

[0003] In the prior art, most of the coaxiality and perpendicularity detection tools are set as two independent tools. When performing corresponding parameter detections, it is necessary to frequently disassemble and assemble the tools, which reduces the detection efficiency, and the two sets of tools also increase the tooling cost. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a coaxiality and perpendicularity detection tool, which solves the technical problems that the coaxiality and perpendicularity detection tools in the prior art are set as two independent tools, with low detection efficiency and high tooling cost.

[0006] (2) Technical Solutions

[0007] In order to achieve the above object, the main technical solutions adopted by the utility model include:

[0008] In a first aspect, the utility model provides a coaxiality and perpendicularity detection tool suitable for detecting the connection accuracy between a first rotating shaft and a second rotating shaft, including a fixed seat and a dial indicator. The fixed seat is detachably connected to the first rotating shaft; the dial indicator is supported on the fixed seat; the dial indicator includes a detection body and a detection end swingably connected to the detection body; the detection end can be switched between a coaxiality detection position and a perpendicularity detection position; when in the coaxiality detection position, the detection end abuts against the outer side wall of the second rotating shaft; when in the perpendicularity detection position, the detection end abuts against the end face of the second rotating shaft.

[0009] (3) Advantageous Effects

[0010] The beneficial effects of the present utility model are as follows: The coaxiality and perpendicularity detection tooling of the present utility model integrates the two functions of coaxiality detection and perpendicularity detection, greatly improving the convenience of coaxiality and perpendicularity detection and reducing the tooling cost. Moreover, when switching the detection states of the two toolings, only the tooling needs to be adjusted, which greatly improves the detection efficiency of coaxiality and perpendicularity compared with completely replacing new toolings in the prior art.

[0011] The first rotating shaft is a lead screw, and the second rotating shaft is a motor shaft, so that the tooling can detect the coaxiality of the lead screw and the motor shaft, as well as the perpendicularity between the axis of the lead screw and the end face of the motor shaft.

[0012] Detecting the two parameters of coaxiality and perpendicularity to determine the parameter accuracy of the motor shaft and the lead screw. Compared with only detecting a single coaxiality or perpendicularity, when both the coaxiality and perpendicularity meet the requirements, the matching degree of the motor shaft and the lead screw will be higher, thereby improving the accuracy when the motor shaft and the lead screw cooperate and also improving the accuracy of the machine tool. Description of the Drawings

[0013] Figure 1 It is one of the structural schematic diagrams of the coaxiality and perpendicularity detection tooling in an embodiment of the present utility model;

[0014] Figure 2 It is the structural schematic diagram of the fixed seat in an embodiment of the present utility model;

[0015] Figure 3 It is the second structural schematic diagram of the coaxiality and perpendicularity detection tooling in an embodiment of the present utility model;

[0016] Figure 4 It is the third structural schematic diagram of the coaxiality and perpendicularity detection tooling in an embodiment of the present utility model;

[0017] Figure 5 It is the first structural schematic diagram of the coaxiality and perpendicularity detection tooling in another embodiment of the present utility model;

[0018] Figure 6 It is the second structural schematic diagram of the coaxiality and perpendicularity detection tooling in another embodiment of the present utility model.

[0019]

Description of the Reference Numerals

[0020] 10. First rotating shaft; 20. Second rotating shaft;

[0021] 1. Fixed seat; 11. Ring; 12. Bracket; 120. Mounting hole;

[0022] 2. Dial indicator; 21. Detection body; 22. Detection end;

[0023] 3. Connecting component; 31. Second connecting bolt;

[0024] 32. Sleeve; 33. Wedge block; 330. Limiting portion; 34. Rotating ring;

[0025] 4. First connecting bolt. Detailed implementation manner

[0026] For better explaining the present utility model for easy understanding, the following combines the attached Figures 1 - 6 , and through the detailed implementation manner, the present utility model is described in detail. Among them, the orientation nouns such as "upper" and "lower" mentioned in this article are based on Figure 1 the orientation of

[0027] Embodiment 1:

[0028] Referring to Figures 1 - 6 , the embodiment of the present utility model provides a coaxiality and perpendicularity detection tooling, which is suitable for detecting the connection accuracy of the first rotating shaft 10 and the second rotating shaft 20, and includes a fixed seat 1 and a lever dial indicator 2. The fixed seat 1 is detachably connected to the first rotating shaft 10; the lever dial indicator 2 is supported on the fixed seat 1; the lever dial indicator 2 includes a detection body 21 and a detection end 22 swing-connected to the detection body 21; the detection end 22 can be switched between a coaxiality detection position and a perpendicularity detection position; when in the coaxiality detection position, the detection end 22 abuts against the outer side wall of the second rotating shaft 20; when in the perpendicularity detection position, the detection end 22 abuts against the end face of the second rotating shaft 20.

[0029] Specifically, the fixed seat 1, as the connection component of the entire detection tooling and the first rotating shaft 10, is used to ensure the stability of the tooling during the detection process. The detachable connection method enables the tooling to be conveniently installed and disassembled, is applicable to the first rotating shafts 10 of different sizes, and improves the versatility of the tooling. The fixed seat 1 also provides support for the lever dial indicator 2 to ensure the position accuracy of the dial indicator during the detection process.

[0030] When in the coaxiality detection position, the detection end 22 abuts against the outer side wall of the second rotating shaft 20, and the coaxiality of the two rotating shafts is determined by measuring the deviation of the outer side wall of the second rotating shaft 20 relative to the first rotating shaft 10. When in the perpendicularity detection position, the detection end 22 abuts against the end face of the second rotating shaft 20, and the perpendicularity between the end face of the second rotating shaft 20 and the axis of the first rotating shaft 10 is measured.

[0031] According to the reading change of the dial indicator, the coaxiality deviation and perpendicularity deviation of the two rotating shafts can be determined for adjustment and correction.

[0032] The inspection tooling in this patent integrates the functions of coaxiality inspection and perpendicularity inspection, greatly improving the convenience of coaxiality and perpendicularity inspection and reducing the tooling cost. Moreover, when switching the inspection states of the two toolings, only the tooling needs to be adjusted, which greatly improves the inspection efficiency of coaxiality and perpendicularity compared with completely replacing the new tooling in the prior art.

[0033] The first rotating shaft 10 is a lead screw, and the second rotating shaft 20 is a motor shaft, so that the tooling can inspect the coaxiality of the lead screw and the motor shaft, and the perpendicularity between the axis of the lead screw and the end face of the motor shaft.

[0034] Determining the parameter accuracy of the motor shaft and the lead screw by inspecting the two parameters of coaxiality and perpendicularity. Compared with only inspecting a single coaxiality or perpendicularity, when both coaxiality and perpendicularity meet the requirements, the matching degree of the motor shaft and the lead screw will be higher, thereby improving the accuracy when the motor shaft and the lead screw cooperate, and also improving the accuracy of the machine tool.

[0035] When inspecting the coaxiality and perpendicularity, the lead screw can be rotated once every 90°, and a relatively accurate measurement value can be obtained. The difference between the maximum and minimum values is the error value, which is required to be not greater than 0.02 mm.

[0036] If the assembly requirements are met through inspection, the assembly can be carried out with confidence. For those that exceed the assembly requirements, adjustment can be made through the motor mounting plate to meet the assembly requirements.

[0037] Embodiment 2:

[0038] Refer to Figures 1 - 6 , in addition to having all the technical solutions of the above embodiment, the embodiment of the present utility model further has the following technical solutions:

[0039] A first connection section and a second connection section are formed on the first rotating shaft 10, and the first connection section is closer to the second rotating shaft 20 than the second connection section; when in the coaxiality inspection position, the fixed seat 1 is connected to the first connection section; when in the perpendicularity inspection position, the fixed seat 1 is connected to the second connection section.

[0040] In this embodiment, both the first connection section and the second connection section are set as parts on the first rotating shaft 10. When the inspection tooling inspects the coaxiality and perpendicularity, by fixing the fixed seat 1 at different axial positions on the first rotating shaft 10, it can better provide reliable support for the adjustment process of the inspection end 22 and the state of abutting against the second rotating shaft 20, and reserve enough adjustment space, which is beneficial to further improving the efficiency of the tooling when inspecting the coaxiality and perpendicularity.

[0041] Embodiment 3:

[0042] Refer to Figures 1 - 6, In addition to all the technical solutions of any of the above embodiments, the embodiment of the present utility model further has the following technical solutions:

[0043] The fixed seat 1 includes a ring 11 and a bracket 12 supported on the ring 11, and the lever dial indicator 2 is supported on the bracket 12; the ring 11 is sleeved on the first rotating shaft 10; the detection tooling further includes a connection assembly 3 to establish a detachable connection relationship between the ring 11 and the first rotating shaft 10. It also includes a first connecting bolt 4. An installation hole 120 is provided on the bracket 12. After the rod portion of the detection body 21 passes through the installation hole 120, it is locked by the first connecting bolt 4. The detection end 22 is connected to one end of the rod portion of the detection body 21 close to the second rotating shaft 20, so that the detection end 22 can radially approach or move away from the second rotating shaft 20.

[0044] The fixed seat 1 includes a ring 11 and a bracket 12. The ring 11 is an annular structure for sleeving on the first rotating shaft 10 to ensure that the fixed seat 1 can stably follow the rotation of the first rotating shaft 10. The bracket 12 is supported on the ring 11 and is used for installing and fixing the lever dial indicator 2. The design of the bracket 12 should ensure that the dial indicator can accurately and stably point to the target point to be measured.

[0045] The lever dial indicator 2 is a precision measuring instrument for measuring small linear displacements or angular changes. It includes a detection body 21 and a detection end 22. The lever dial indicator 2 is supported on the bracket 12 so that it can perform precise measurements relative to the first rotating shaft 10.

[0046] The connection assembly 3 is used to establish a detachable connection relationship between the ring 11 and the first rotating shaft 10. Under the action of the connection assembly 3, the detection tooling can be flexibly installed and disassembled, ensuring the disassembly and assembly efficiency of the detection tooling.

[0047] The first connecting bolt 4 is used to fix the rod portion of the lever dial indicator 2 on the bracket 12. An installation hole 120 is provided on the bracket 12. After the rod portion of the detection body 21 passes through this installation hole 120, it is locked by the first connecting bolt 4, ensuring the stability and accuracy of the dial indicator during the measurement process, avoiding measurement errors caused by vibration or impact, and also providing a hardware basis for the position adjustment of the dial indicator. By changing the circumferential position of the rod portion in the installation hole 120, the distance between the detection end 22 and the second rotating shaft 20 can be changed, so that the detection tooling can match second rotating shafts 20 with different outer diameters, and the detection end 22 can also meet the use requirements for detecting the outer peripheral surface and end surface of the second conversion.

[0048] Embodiment 4:

[0049] Refer to Figures 1 - 4 , In addition to all the technical solutions of Embodiment 3, the embodiment of the present utility model further has the following technical solutions:

[0050] The connecting component 3 includes a second connecting bolt 31, and the head end of the second connecting bolt 31 radially penetrates through the ring 11 and then presses against the first rotating shaft 10.

[0051] In this embodiment, the second connecting bolt 31 is used to lock the ring 11 on the first rotating shaft 10. While ensuring the connection stability between the two, it also guarantees the convenience of disassembling and assembling the tooling relative to the first rotating shaft 10.

[0052] Specifically, a polyurethane contact layer can be provided at the end of the second connecting bolt 31 to prevent the first rotating shaft 10 from being damaged when the second connecting bolt 31 presses against the first rotating shaft 10.

[0053] Embodiment 5:

[0054] Referring to Figure 5 and Figure 6 , in addition to all the technical solutions of the above Embodiment 3, the embodiments of the present utility model further have the following technical solutions:

[0055] The connecting component 3 includes a sleeve 32, a wedge block 33, and a rotating ring 34. The sleeve 32 is connected to the ring 11. The wedge block 33 is radially slidably connected to the sleeve 32 and penetrates through the sleeve 32 at both ends. The rotating ring 34 is threadedly connected to the sleeve 32. A first pressing surface is formed at the first end of the wedge block 33 away from the first rotating shaft 10, and a second pressing surface is formed on the inner surface of the rotating ring 34 close to the wedge block 33. When the rotating ring 34 approaches the ring 11, the first pressing surface can cooperate with the second pressing surface so that one end of the wedge block 33 located inside the sleeve 32 approaches and presses against the first rotating shaft 10. Both the first pressing surface and the second pressing surface are inclined surfaces that match each other, and the end of the first pressing surface close to the ring 11 inclines outward from the sleeve 32. The connecting component 3 is located on the side of the ring 11 away from the second rotating shaft 20. A limiting portion 330 is further formed at the end of the wedge block 33 away from the first rotating shaft 10, which is adapted to limit the maximum distance of the wedge block 33 sliding in the direction of the first rotating shaft 10.

[0056] In this embodiment, the sleeve 32 is connected to the ring 11, providing an installation and movement track for the wedge block 33 and the rotating ring 34. The wedge block 33 can be radially slidably connected to the sleeve 32, and both of its ends penetrate out of the sleeve 32. When the wedge block 33 is squeezed, it generates a radial movement inside the sleeve 32. The rotating ring 34 is threadedly connected to the sleeve 32. By rotating the rotating ring 34, the relative position between it and the wedge block 33 can be controlled, thereby realizing the squeezing of the wedge block 33.

[0057] In the initial state, the rotating ring 34 is located at a position on the sleeve 32 that is farther from the circular ring 11. At this time, the wedge 33 is relatively free within the sleeve 32, and the end thereof close to the first rotating shaft 10 is not pressed against the first rotating shaft 10 due to the extrusion of the rotating ring 34.

[0058] When it is necessary to connect the circular ring 11 and the first rotating shaft 10, first ensure that the circular ring 11 is in a suitable position, and then rotate the rotating ring 34 to make it close to the circular ring 11. As the rotating ring 34 approaches, the second extrusion surface formed on its inner surface begins to contact the first extrusion surface of the wedge 33. Since both the first extrusion surface and the second extrusion surface are mutually matching inclined surfaces, and the end of the first extrusion surface close to the circular ring 11 inclines outward from the sleeve 32, when the rotating ring 34 continues to rotate and approach the circular ring 11, the wedge 33 will receive an extrusion force in the direction of the center of the sleeve 32.

[0059] As the extrusion force increases, the end of the wedge 33 within the sleeve 32 will approach and press against the first rotating shaft 10. Due to the special design of the wedge 33, this extrusion effect will be converted into a powerful radial force, firmly locking the circular ring 11 on the first rotating shaft 10.

[0060] A limiting portion 330 is further formed at the end of the wedge 33 away from the first rotating shaft 10, which is used to prevent the wedge 33 from detaching from the sleeve 32. Furthermore, when this tooling is not installed on the first rotating shaft 10, the integrity of the tooling is ensured, and the wedge 33 is prevented from coming out.

[0061] By arranging the connecting assembly 3 on the side of the circular ring 11 away from the second rotating shaft 20, it is possible to avoid the connecting assembly 3 occupying the position of the second rotating shaft 20 and prevent the connecting assembly 3 from affecting the detection process.

[0062] The wedge 33 is provided with a plurality of them distributed circumferentially along the sleeve 32, which can increase the contact area between this tooling and the first rotating shaft 10. Furthermore, when the wedge 33 presses against the first rotating shaft 10, the surface of the first rotating shaft 10 can be prevented from being damaged.

[0063] In summary, for the detection tooling including such a connecting assembly 3, its connection with the first rotating shaft 10 is more convenient, the disassembly and assembly efficiency of this detection tooling can be further improved, and thus the detection efficiency of this detection tooling can be improved.

[0064] It can be understood that in the above Embodiments 1-6, except for the conflicting parts, they can be freely combined to form other embodiments of the present invention.

[0065] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0066] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0067] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0068] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device comprising a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, article, or apparatus / device.

[0069] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A coaxiality and perpendicularity detection tooling, characterized in that, Suitable for detecting the connection accuracy of the first rotating shaft (10) and the second rotating shaft (20), including: A fixed seat (1), detachably connected to the first rotating shaft (10); A lever dial indicator (2), supported on the fixed seat (1); The lever dial indicator (2) includes a detection body (21) and a detection end (22) swing-connected to the detection body (21); the detection end (22) can be switched between a coaxiality detection position and a perpendicularity detection position; In the coaxiality detection position, the detection end (22) abuts against the outer wall of the second rotating shaft (20); in the perpendicularity detection position, the detection end (22) abuts against the end face of the second rotating shaft (20).

2. The coaxiality and perpendicularity detection tooling according to claim 1, characterized in that: A first connection section and a second connection section are formed on the first rotating shaft (10), and the first connection section is closer to the second rotating shaft (20) than the second connection section; In the coaxiality detection position, the fixed seat (1) is connected to the first connection section; in the perpendicularity detection position, the fixed seat (1) is connected to the second connection section.

3. The coaxiality and perpendicularity detection tooling according to claim 2, characterized in that: The fixed seat (1) includes a ring (11) and a bracket (12) supported on the ring (11), and the lever dial indicator (2) is supported on the bracket (12); the ring (11) is sleeved on the first rotating shaft (10); The detection tooling further includes a connection assembly (3) to establish a detachable connection relationship between the ring (11) and the first rotating shaft (10).

4. The coaxiality and perpendicularity detection tooling according to claim 3, characterized in that: It further includes a first connection bolt (4). An installation hole (120) is formed in the bracket (12). The rod portion of the detection body (21) passes through the installation hole (120) and is locked by the first connection bolt (4). The detection end (22) is connected to one end of the rod portion of the detection body (21) close to the second rotating shaft (20), so that the detection end (22) can radially approach or move away from the second rotating shaft (20).

5. The coaxiality and perpendicularity detection tooling according to claim 4, wherein: The connection assembly (3) includes a second connection bolt (31). The head end of the second connection bolt (31) radially penetrates the ring (11) and presses against the first rotating shaft (10).

6. The coaxiality and perpendicularity detection tooling according to claim 4, characterized in that: The connection assembly (3) includes a sleeve (32), a wedge block (33) and a rotating ring (34). The sleeve (32) is connected to the ring (11). The wedge block (33) is radially slidably connected to the sleeve (32) and both ends penetrate out of the sleeve (32). The rotating ring (34) is threadedly connected to the sleeve (32); A first pressing surface is formed at the first end of the wedge block (33) away from the first rotating shaft (10), and a second pressing surface is formed on the inner surface of the rotating ring (34) close to the wedge block (33); when the rotating ring (34) approaches the ring (11), the first pressing surface can cooperate with the second pressing surface, so that one end of the wedge block (33) located inside the sleeve (32) approaches and presses the first rotating shaft (10); The wedge blocks (33) are arranged in a plurality circumferentially distributed along the sleeve (32).

7. The coaxiality and perpendicularity detection tooling according to claim 6, characterized in that: Both the first extrusion surface and the second extrusion surface are inclined surfaces that match each other, and one end of the first extrusion surface close to the ring (11) inclines outward from the sleeve (32).

8. The coaxiality and perpendicularity detection tooling according to claim 6, wherein: The connection assembly (3) is located on a side of the ring (11) away from the second rotating shaft (20).

9. The coaxiality and perpendicularity detection tooling according to claim 6, wherein: One end of the wedge block (33) away from the first rotating shaft (10) further forms a limiting portion (330), which is adapted to limit the extreme distance of the wedge block (33) sliding in the direction of the first rotating shaft (10).

10. The coaxiality and perpendicularity detection tooling according to any one of claims 1-9, characterized in that: The first rotating shaft (10) is a lead screw, and the second rotating shaft (20) is a motor shaft.

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